Safety razor



Oct. 13, 1931. H. B. HARTAAN SAFETY RAZOR Filed June 1'7, 1929llllllllllfrlll -IIIIIH Hummel-4 Patented Oct. 13, 1931 HARRY BUx'roNHARTMAN, org-Bennato, NEW YORK SAFETY Razon Application inea June 17,1929. serial No. 371,462.

This invention relates to improvements in safety razors, and has forits' general objecty tol provide a safety razorincluding a handlemounted for universal j adjustment, vand a in) blade yguard adjustableto 'accommodate blades of different widths, embodied in a thoroughlypractical structure of exceptionally simple,sturdy, compact designcapable of being produced at relatively low cost.

More particularly, it is an object of the invention to provide animproved construction embodying the features of simplicity and cheapnessfor permitting universal adjustv ment of the handle and for holding'thehan-A dle firmly in any adjusted position in which it may be placed. v

Also, it is a more specific object of the in-y vention to provide aconstruction embodying the features of simplicity andcheapness andadjustable by the mere act of inserting a blade in the razor toaccommodate blades of varying widths.

Further, it is a more specific object of the t invention to provideblade holding means adzjustable to accommodate blades of varying widths,which means exerts a constant spring force tending to hold vthe blade inoperative position. i

With the foregoing 'and other objects in lview, the rinvention consistsin the novely features -of construction, combination-and ar- Y rangementof parts as'will bey hereinafter more fully described, illustrated inthe -acv, companying drawings and'deiined in the ap- 4pended claims.. l

vIn the drawings, wherein like characters of reference denotecorresponding parts inthe different views.

Fig. 1 is a side elevation of a safety razor 4o 4embodying the featuresof the-'present invention. f

Fig. 2 Vis a view showing the adjustable.v

blade holding means in cross section andthe -handle mounting meansinfelevation.

Fig. 3 is a view similar to Fig. 2 showing both the blade holding meansand the handle mounting' means in cross section. "f

Fig. 4 is anl end elevation of the razor. Fig. 5 is a section takenapproximately on n theline 5-'-5 of Fig. l.

' with respect thereto.

Fig. 6 is a sectional view through the cup f elementof the universal.`joint connection for the handle; and

Fig. 7 is an end view'of the cup element shown in Fig. 6. f '55Referring to the drawings in detail 10 designates a hollow, cylindricalsleeve of short length, internally threaded from'its outer end, providedwith an inwardly directed prefi erably vannular'flange 11 at its innerend, andl 'formed with an external preferablyrannular flange 12.

Ay cup element 13 provided at its openend with an external preferablyannular flange 14 and of sphericalforin at its other end, is e5 adaptedto receive a spherical extremity 15 Y of the handle 16 and tobeassembled with the sleeve 10 whereby'the handle 16 is connected withsaid sleeve for universal adjustment To this end the cup u element 13 isslotted as indicated at 17 lto accommodate the portion of the handleadjacent to its spherical extremity or ball end 15, this slot extendingfrom the open end of said cup element inwardly a suitable distance so u'that the handle may be swung to any angle' between a position in axialalinement with the cup and a position in which its axis is disposedsubstantially at right anglesto the-axis ofthe cup. Said cup is of anexternal diam- 'eter to fit neatly within the annular flange 11 of thesleevefl() and is adapted to bepassed 4 through said sleevefrom theouter end of the latter whereby itsl spherical end portion is disposedinwardly of the sleeve 10 and its 85# flange 14 is shouldered againstthe flange 11. Thus, said cup element is assembled with the sleeve 10for rotation with respect thereto, and due to the slot 17 in said cupelement whichpermits the handle 16 to be swung as go 1 aforesaid, it isapparent thatv the handle is i capablel of being adjusted tofpracticallyany desired angle with respectto the sleeve 10.

To provide for frictionally retaining the handle 16 in anyadj ustedposition in which itV g5 f maybe placed, a short, relatively 'stiff CoilspringlS is interposed between 'the'spherioal' extremity 15 ofthe handleand aplug or cap` c element 19 whichis threaded into the outer end ofthe s1eeve`10. This spring, reacting 100 i from the plug or cap element19, forces the spherical handle extremity 15 against the inner face ofthe cup element 13 and the flange 14 of said cup element against theflange 11 5 of the sleeve 10, with a pressure which may be varied bythreaded adjustment of the plug or cap element 19 within the sleeve l0.Thus, greater or less freedom of adjustable movement of the handle 16may be provided for so long as the spring 18 is maintained sufficientlycompressed to produce the necessary friction between the sphericalextremity of the handle and the cup 13, and between the flanges 11 and14 to hold the handley in ad- 15 justed positions.

By meansof a collar engaged by a press fit over the inner end portion ofthe sleeve 10 or otherwise rigidly connected with said sleeve, or, ifdesired, by means of an integral 20.formation on the sleeve 10, ashoulder 21 is provided at the inner end of the flange 12 to limitinward movement of a backing plate 22 and a blade guard 23 which areengaged over said flange.

25.*, The backing plate 22 is provided with an lopening which neatlyreceives the flange 12, its function being primarly to serve as asupport for the guard 23 and as a cover for the rear face of said guard.Said backing plate 30,.l is seated against the shoulder 21 and the bladeguard 23 ,is seated for sliding movement against the outer face of saidbacking plate, outward movement of said blade guard being prevented by ablade holding plate 24 rigidly .Connected with the sleeve 10 outwardlyof the Vflange 12. ln the present instance said holding plate 24 has acentral opening which receives the outer end portion of the sleeve 10,the inner face of said plate adjacent to the 4.opening therein seatingagainst the outer end "of the flange 12, and the outer end portion ofthe sleeve 10 being spun or peened over against the outer face of saidplate whereby the latter is secured rigidly in assembly with L5.thesleeve 10.

"U @ne side of the plate 24 is provided with an outwardly directedflange 25 against which the blunt edge of the blade 26 is engaged, thesharp edge of said blade being engaged at the :ends thereof under lips27 formed by turning upon themselves the two outermost teeth of of theseries of teeth 28 formed along the edge of the blade guard which isopposite to the flange 25 of the plate 24.

55,.. The blade holding plate 24 is provided at Aits ends with inwardlydirected ears 29 which engage the ends of the guard 23 therebypreventing rotation of said guard with respect to the plates 22 and 24and the sleeve 10. The

6o.,.guard 23 is slotted as indicated at 30 to receive the flange 12'whereby the guard is slidably movable between the ears 29, a bent wireor leafk spring 31 being interposed between the flange 12 and the wallof said slot oppoe5,` siteto the teeth 28 whereby. the guard is.l

urged constantly in a direction to bring the toothed edge thereoftowards the flange 25 of the plate 24. rlhus, by pressing on the edge ofthe guard opposite to the edge thereof having the teeth 28, the saidtoothed edge may be moved away from the flange 25 to permit a blade 26to be placed as shown in the drawings between the lips 27 and the flange25, after which release of the guard will permit the spring 31 to act tourge the guard in an opposite direction to clamp the blade between saidflange and said lips. lt thus is apparent that blades 26 of materiallydifferent widths may readily be accommodated. Figur-e 1 illustrates bydotted lines how the guard 23 is adapted to be slidably adjusted withrespect to the plate 24 to permit engagement of the blade 26 in themanner stated. v

By reference particularly to Figs. 2 and 3 of the drawings it will benoted that the two outermost teeth 28, i. e. the two teeth having thelips 27, extend outwardly beyond the intermediate teeth by an amountequal approximately to the thickness of the material of the guard. Thisassists in avoiding damage to the cutting edge of the blade byengagement with the intermediate teeth during insertion and removal ofthe blade, assists in securing proper engagement of the blade againstthe skin, and eliminates any possibility of the corners of the bladegouging or scratching' the skin.

VLl/Vithout further description it is thought that the features andadvantages of the invention will be readily apparent to those skilled inthe art, and it will of course be understood that changes in the form,proportion and minor details of construction may be resorted to, withoutdeparting from the spirit of the invention and scope of the appendedclaims. Y

I claim:

1. In a safety razor, a member with which the handle of the razor isconnected, a shoulder on said member, a guard supporting plate seatedagainst said shoulder, a slotted guard disposed over said member andslidably seated against said plate, a blade holding plate rigid withsaid member, said guard being disposed between said guard supportingplate and said blade holding plate, a flange at one side of said bladeholding plate, lips at the opposite side of said guard, said flange andsaid lips being adapted to receive a blade therebetween, and a springdisposed between said member and said guard constantly urging the latterin a direction to clamp a blade between ysaid flange and said lips.

2. ln a safety razor, a member with which the handle of the razor isconnected, a blade holding plate secured rigidly to the outer end ofsaid member, ,a slottedblade guard disposed slidably against the innerface offsaid plate, guide lflanges extending inwardly from the ends ofsaid plate into overlying'relation to the ends of said guard, and a leafsprin disposed Within the slot ofsaid guard an inclusive of anintermediate bowed portion embracing said member and free end portionsbearing against said guard;

3. In a safety razor, a member with which the handle of the razor isconnected, a blade holding plate rigidly secured to the outer end ofsaid member, a slotted blade guard having abutments at its front edgeand slidably arranged beneath the inner face of said plate, means forguiding the blade guard with reference to the blade holding plate, and aspring disposed Within the slot` of the guard and having a portionengaging said member, and the ends thereof bearing against said guard.

4. In a safety razor, a member with which the handle of the razor isconnected, av blade holding plate rigidly secured to the outer end ofsaid member, a slotted blade guard disposed slidably against the innerface ofV said plate, means for guiding the blade guard with reference tothe blade holding plate, and a leaf spring disposed Within the slot ofsaid guard and having the free end portions theren of bearing againstsaid guard.

In testimony whereof I hereunto affix my signature.

HARRY BUXTON HARTMAN.

